Your pic was what made me think of putting small casters on the bottom. I don’t plan on taking this one out of the basement. Actually right after I brought this cab home, my band broke up so I’m not playing with anyone right now. If I were to take an 810 out, I have a road warrior with no tolex on it that I don’t mind beating up.
Sonically, noticeable differences between the Flatback and the 810AV I have it paired with. For my EQ, the AV is crisp and clear while the Flatback is a little more on the warm and wooly side. I have one on each side of the drum set and when you step back into the room, you can’t hear the difference, but up close it’s very clear that they’re two very different cabs. To be honest it makes me want to find a second Flatback to get the full effect of the real thing lol